Lockable desktop inbox



FIG. 1 is a front, left side, perspective view of a lockable desktop inbox, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is right side view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the figures illustrate unclaimed environment and form no part of the claimed design. 

CLAIM The ornamental design for a lockable desktop inbox, as shown and described. 